Authentication device and method
US8205075B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2005 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Apr 15, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3236
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Provided is an authentication system capable of identifying a cause of a failure when authentication fails. A data structure of data to be authenticated has a header authentication data area (D2), and an authentication data area (D4) in addition to a header area (D1) and a data area (D3). The header authentication data area (D2) authenticates validity of the header area (D1), and the authentication data area (D4) authenticates the validity of the header authentication header area (D2) and the data area (D3). Since two kinds of authentication are carried out, the cause of the failure in authentication can be identified easily when authentication is failed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.